Well, to make a long story short, Andrew Garfield is not Jewish! (though he Was raised on the Jewish faith)
Since Andrew Garfield's mother is not Jewish, and in Judaism one's religion is based on one's mother's religion, then that makes him also not Jewish (though once again, he WAS raised Jewish). Though he is not Jewish, His father is Jewish, which makes him in some views half Jewish...
Andrew Garfield (who's full birth name is Andrew Russell Garfield) was born on 20 August 1983 in Los Angeles, California.
He is best known for his part as Peter Parker for a reboot of the blockbuster "Spider-Man" (2012) franchise, and for his role as Desmond Doss in Mel Gibson's “Hacksaw Ridge” (2016).
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